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Question 1: What are the basic building blocks of discrete time system? The basic building blocks of a discrete-time system are the fundamental elements used to represent and construct discrete-time systems. They are: Adder (Summation Element) – It adds two or more input signals to produce an output signal. It is represented by: y [ n ] = x 1 [ n ] + x 2 [ n ] y[n] = x_1[n] + x_2[n] Constant Multiplier – It multiplies a signal by a constant value. It is represented by: y [ n ] = a x [ n ] y[n] = a\,x[n] Signal Multiplier – It multiplies two or more signals together. It is represented by: y [ n ] = x 1 [ n ] x 2 [ n ] y[n] = x_1[n]x_2[n] Unit Delay Element – It delays a discrete-time signal by one sample. It is represented by: y [ n ] = x [ n − 1 ] y[n] = x[n-1] It is usually denoted by z − 1 z^{-1} . Unit Advance Element – It advances a discrete-time signal by one sample. It is represented by: y [ n ] = x [ n + 1 ] y[n] = x[...